vs cpu-endian vs whatever), and there the constant "0" really _is_
special.
-__bitwise__ - to be used for relatively compact stuff (gfp_t, etc.) that
-is mostly warning-free and is supposed to stay that way. Warnings will
-be generated without __CHECK_ENDIAN__.
-
-__bitwise - noisy stuff; in particular, __le*/__be* are that. We really
-don't want to drown in noise unless we'd explicitly asked for it.
-
Using sparse for lock checking
------------------------------